Yes indeed, it works thanks for helping me out on this matter.
The following is what I did:

Created a new aml with the Breakpoint removed:
% acpidump -t -d > HP_LP1000r.asl
<removed the "BreakPoint" line in that file>
% iasl HP_LP1000r.asl
% cp DSDT.aml /boot/HP_LP1000r.aml
and then edited /boot/loader.conf which contains now:

debug.acpi.disabled=pci # to get pciconf -lv working
acpi_dsdt_load="YES"
acpi_dsdt_name="/boot/DSDT.aml"